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The heater core is difficult to change on the Ford trucks. They have it buried in the plenum box and you have to remove the steering wheel, steering column, dash, evacuate the refrigerant system, drain the radiator, and remove the plenum box to get to the core. Replacing the core is easy, getting to it is a day's work.
You need to be sure that the heater core is really the problem before tackling this job. If you have a pool of coolant on the floor, you'll have to go after the core. If the problem is lack of heat, there are some things you need to eliminate before tearing into the truck. You need to make sure that coolant is flowing through the core. Check the temperature of the heater hoses going into the firewall when the engine is cool and see if they warm up together as the engine warms up. If both hoses get hot at about the same rate, this is a good indication that coolant is flowing through the core. You can also remove the hoses and flush the core with a water hose splice from Home Depot and a water hose. Water should flow unobstructed through the core.
If it appears that coolant is flowing and you don't have obvious leaks, the next step is to check the blend door. This door controls the air flow through the heater core and failure is common on Ford trucks. When the door breaks, it can block the flow of air through the core and kill heat and will also have an impact on AC. If the system seems to work intermittently, it's a good indication that the door is broken and rattling around randomly blocking or opening the passage to the core.
For diagnostic information on how to check the operation of the blend door and a cheap easy fix, check the heatertreater listing on Ebay or the web site at heatertreater.net. The dealer fix for the blend door is basically the same procedure for replacing the heater core, so it will be expensive. The HeaterTreater alternative will solve the problem at a fraction of the cost and work and is well within the capability of the average shade tree mechanic.
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∙ 15y ago
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How do you change the heater core in a 2000 F150 4.6L?
remove glove box. remove platic cover behind glove box under hood remove both heater hoses at firewall under dash remove retaining screws on heater core remove heater core reinstall is exact opposite of removal
How do you change the heater core in a 2000 F150 5.4L?
trust me that is not a job you want to take on. take it to a mechanic. you have to pull the dash out
1998 ford f150 neither hose going to heater core is hot?
heater core hoses not hot
What manual has the best details for the removal of the heater core in a 2002 ford F150?
chilton shop manuel for your model pickup will show all you need to know
Does a 1988 F150 have a water shutoff to the heater core somewhere in the engine compartment?
No
How to remove the heater core on a 1996 F150?
Look up under the passenger's side dash close to the kick panel, and you will see a heater case. there on the front is a removable cover, held on with several 7mm screws. Remove that cover, disconnect the heater hoses under the hood, and replace the core. Reassembly is in reverse order of removal.
How do you unclog a heater core for a 1990 Ford F150?
Try flushing the coolant system out
How to remove heater core on F150 Ford Pick up?
what is the year model? 1995
Replacing heater core in 2002 f150?
Is there any difference in replacing the heater core in the 2002 as opposed to an earlier model such as the 1997 ?...or is it pretty much the same job ?
How do you replace a heater core on a 1984 Ford F150 with ac?
Look up under the passenger's side dash close to the kick panel, and you will see a heater case. there on the front is a removable cover, held on with several 7mm screws. Remove that cover, disconnect the heater hoses under the hood, and replace the core. Reassembly is in reverse order of removal.
Why is your 2007 ford f150 truck heater blowing only warm air and not getting hot?
Your heater core might be clogged or otherwise inoperable. Videos for unclogging a heater core can be found quite easily on Youtube.
How do you change the heater core in a 87 Ford F-150?
To change the heater core in a 87 ford f150 is easy. Just remove the glove box and then behind it there is 7 bolts. After you remove the 7 bolts then just remove the cover and behind it is the heater core. By far the easiest heater core I ever changed.
